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Message #19409
Re: [FreeEDA] Requesting your co-operation new version of Oscad, a free and open source EDA tool
Thank you for the update. I hope to take a look at this sometime after
the upcoming stable release. If someone else has a chance to give this
a try before I do, please let me know your thoughts.
Cheers,
Wayne
On 7/15/2015 3:50 AM, Oscad Team wrote:
> Hi Wayne, Cirilio and the KiCad team,
>
> Greetings from the eSim (formerly known as FreeEDA/ Oscad) team, FOSSEE,
> IIT Bombay!
>
> We are happy to announce a new more user friendly and better appealing
> GUI with added features to our EDA tool. We also chose to give it a new
> name. It uses KiCad for creation of circuit schematic and ngspice for
> simulation. We have also incorporated additional simulation capability
> using Python plotting. Next month we are planning to launch the tool to
> a group of faculty from across India.
>
> We have used the KiCad code from the product branch (build on July 2014)
> in eSim. The steps we follow in our EDA tool are as follows:
>
> * Create circuit schematic using KiCad
> * Generate Kicad netlist
> * Convert KiCad netlist to ngspice compatible netlist (using a parser
> written in Python)
> * Simulate using ngspice
>
>
> Hence any KiCad user can start using our tool to start simulation
> without any problems. We are very eager to integrate the simulation
> feature to KiCad so that more people can benefit from it.
>
> We are sharing the Git repo link for our code,
> https://github.com/FOSSEE/eSim. Anyone interested can test the same and
> help us improve the code.
>
> Regards,
> eSim team
>
>
> On Mon, Feb 23, 2015 at 3:20 PM, Fahim Khan <fahim.elex@xxxxxxxxx
> <mailto:fahim.elex@xxxxxxxxx>> wrote:
>
> Hi Cirilo,
>
> Thanks for your suggestion. We will keep our code branches
> synchronized with main branches.
>
> Regards,
> Fahim
>
>
> On Sat, Feb 21, 2015 at 3:42 AM, Cirilo Bernardo
> <cirilo.bernardo@xxxxxxxxx <mailto:cirilo.bernardo@xxxxxxxxx>> wrote:
>
> Please try to keep any code branches synchronized with the code
> in the main branch. This makes it much easier to maintain the code
> and increases the chance of merging it into the main branch in the
> future. There are many abandoned branches out there which people
> have spent many hours on but it is impossible to merge with the
> main branch because the authors never maintained compatibility
> with the main branch.
>
> - Cirilo
>
> On Fri, Feb 20, 2015 at 9:26 PM, Oscad Team
> <oscad.team@xxxxxxxxx <mailto:oscad.team@xxxxxxxxx>> wrote:
>
> Dear Wayne,
>
> Thank you for the quick response.
>
> We shall check the compatibility of our code with KiCad
> taken from product branch and let you know the results.
>
> Regards,
> FreeEDA team
>
> On Wed, Feb 18, 2015 at 5:45 AM, Wayne Stambaugh
> <stambaughw@xxxxxxxxx <mailto:stambaughw@xxxxxxxxx>> wrote:
>
> On 2/12/2015 2:40 AM, Oscad Team wrote:
> > Dear Wayne,
> >
> > Sorry for the delay in replying to you as we were busy developing new
> > modules for our project.
> >
> > We have worked on KiCad, stable version released in July 2013. We made
> > changes in the KiCad source code, so that it will generate a netlist
> > compatible with ngspice. This is still in the beta version as we lack
> > C++ developer base. Also please note that in case of any changes in the
> > KiCad version can affect the generation of ngspice compatible netlist.
>
> The current stable version of Eeschema is fairly old.
> You really should
> be working from the product branch of KiCad. There has
> been some
> significant changes to the code base that could make
> merging your code
> difficult.
>
> >
> > However we have another version of the project, where we parse the KiCad
> > netlist to generate ngspice compatible netlist. Hence this will work
> > fine as long as there is no change in the format of the netlist
> > generated by KiCad.
>
> Which netlist format, the new s-expression format or the
> old format? I
> can tell you that the new format will change after the
> next stable
> release to accommodate new features planned for
> Eeschema. Saving to the
> old net list format has already be removed from Eeschema.
>
> >
> > Thank you for your patience and waiting in anticipation.
> >
> > Regards,
> > FreeEDA team
> >
> >
> > On Mon, Nov 10, 2014 at 3:50 AM, Wayne Stambaugh <stambaughw@xxxxxxxxxxx <mailto:stambaughw@xxxxxxxxxxx>
> > <mailto:stambaughw@xxxxxxxxxxx
> <mailto:stambaughw@xxxxxxxxxxx>>> wrote:
> >
> > On 11/7/2014 4:54 AM, Oscad Team wrote:
> >> Dear Wayne,
> >>
> >> Thank you for the quick reply. We apologize for
> the delay in
> >> replying as we had some name clash issues to be
> resolved in
> >> between and hence we have changed from Oscad to
> freeEDA.
> >>
> >> We shall answer your queries as inline text.
> >>
> >> Dear Oscad Developers,
> >>
> >> Your work sounds interesting. I have a few
> questions about
> >> the current
> >> state of your code:
> >>
> >> 1) I've been working under the assumption
> that you were
> >> interested in
> >> merging your work into KiCad to provide an
> integrated
> >> simulator solution
> >> but it almost sounds like you are developing
> a stand alone
> >> project so
> >> some clarification on that would be helpful.
> >>
> >> Although we have used a forked version of KiCad
> for FreeEDA, we
> >> are ready to merge it back. This can give KiCad
> an added feature,
> >> namely simulation using ngspice.
> >
> > Have you been keeping up with the recent changes
> to the schematic
> > editor? Within the last few month, there have
> been significant
> > changes in the way Eeschema is built. Namely the
> kiway work which
> > allows Eeschema , CvPcb, and Pcbnew to run in the
> same process. If
> > you haven't, then merging will likely prove
> difficult. If you have,
> > then that should not be an issue.
> >
> >>
> >>
> >> 2) Is there a source repo that we can
> download and build to
> >> get and
> >> idea of how well the software works, what
> kind of effort it
> >> takes to
> >> build on all of the platforms KiCad supports,
> and how
> >> difficult it will
> >> be to merge into the KiCad project?
> >>
> >>
> >> You can download the latest version of FreeEDA from
> >> https://github.com/FOSSEE/FreeEDA
> >
> > It make take some time for me to get around to
> testing this. If
> > anyone on the KiCad developers list has time to
> check this out,
> > please let me know how it works out. If you
> could, please test that
> > it merges cleanly with the product branch and that
> any changes to
> > the Eeschema code follows the coding guidelines
> along with the build
> > and functional testing.
> >
> >>
> >>
> >> 3) Have you bee keeping up with the latest
> changes in KiCad to
> >> ease any
> >> code merges?
> >>
> >>
> >>
> >> We are sure that there will be no issue as
> all FreeEDA
> >> functionalities like eeschema, netlist
> creation for
> >> simulation, PCB design, all uses KiCad
> components by default.
> >> Once our code is merged with KiCad, then we
> shall use the main
> >> trunk of KiCad for further developments.
> >>
> >
> > We are planning a stable release in the not too
> distant future.
> > Merging your simulation code into the product
> branch may have to
> > wait until after the stable release depending on
> the robustness of
> > the simulation code. If that is an issue, we can
> create a separate
> > branch for the merged simulator code and then
> merge it into the
> > product branch after the stable release.
> >
> >>
> >>
> >> 4) If you do plan to merge your simulator
> code into KiCad, are
> >> you going
> >> to supply developer resources to maintain and
> support your code?
> >>
> >> In case our simulator code is merged into KiCad,
> we will be most
> >> happy to provide the necessary support for this code.
> >
> > Thank you for the offer. I'm sure we will need your help with the
> > simulation code. I don't know if we have anyone with experience in
> > that area.
> >
> > Best Regards,
> >
> > Wayne
> >
> >
> >>
> >> Regards,
> >> freeEDA team
> >>
> >>
> >> On Tue, Aug 19, 2014 at 5:01 AM, Wayne Stambaugh
> >> <stambaughw@xxxxxxxxxxx
> <mailto:stambaughw@xxxxxxxxxxx>
> <mailto:stambaughw@xxxxxxxxxxx
> <mailto:stambaughw@xxxxxxxxxxx>>> wrote:
> >>
> >> Dear Oscad Developers,
> >>
> >> Your work sounds interesting. I have a few
> questions about
> >> the current
> >> state of your code:
> >>
> >> 1) I've been working under the assumption
> that you were
> >> interested in
> >> merging your work into KiCad to provide an
> integrated
> >> simulator solution
> >> but it almost sounds like you are developing
> a stand alone
> >> project so
> >> some clarification on that would be helpful.
> >>
> >> 2) Is there a source repo that we can
> download and build to
> >> get and
> >> idea of how well the software works, what
> kind of effort it
> >> takes to
> >> build on all of the platforms KiCad supports,
> and how
> >> difficult it will
> >> be to merge into the KiCad project?
> >>
> >> 3) Have you bee keeping up with the latest
> changes in KiCad to
> >> ease any
> >> code merges?
> >>
> >> 4) If you do plan to merge your simulator
> code into KiCad, are
> >> you going
> >> to supply developer resources to maintain and
> support your code?
> >>
> >> Thank you for you interest in contributing to
> KiCad.
> >>
> >> Regards,
> >>
> >> Wayne
> >>
> >> On 8/18/2014 6:10 AM, Oscad Team wrote:
> >> > *
> >> >
> >> > Dear KiCad Developers,
> >> >
> >> >
> >> > Greetings from Oscad Team, IIT Bombay!
> >> >
> >> >
> >> > In continuation to the earlier discussions,
> we would like to
> >> propose the
> >> > following roadmap:
> >> >
> >> >
> >> > Integration of ngspice to KiCad
> >> >
> >> > Currently, Oscad uses KiCad for schematic
> creation and uses
> >> ngspice for
> >> > simulation. Ngspice has its inbuilt
> plotting mechanism but
> >> it is not
> >> > interactive. Therefore we come up with
> interactive plotting
> >> using python
> >> > matplot library.
> >> >
> >> >
> >> > How the Python plotting works?
> >> >
> >> > Ngspice can print all the plotting data
> using “print allv”
> >> and “print
> >> > alli” command which can be easily stored in
> a text file. The
> >> file is
> >> > then parsed in such a way that it contains
> only time
> >> information and
> >> > value of voltage or current at a particular
> node. After
> >> parsing text
> >> > file, it is send to the plotting function
> which plot the
> >> data. We can
> >> > also plot any arithmetic function on this
> data. Note: The
> >> plotting is
> >> > available only for analog node as there is
> no command to
> >> print all
> >> > digital voltage in ngspice.
> >> >
> >> >
> >> > Below are the questions your team had asked
> in the earlier
> >> communication:
> >> >
> >> >
> >> >> - What type of simulations should be
> possible? Spice,
> >> digital, S-parameter, IBIS for signal
> integrity, other?
> >> >
> >> > *
> >> >
> >> > Spice, digital,S-parameter are supported
> >> >
> >> >> - How a user would set up and run a
> simulation.
> >> >
> >> > There are two ways to do it set up the
> simulation:
> >> >
> >> > *
> >> >
> >> > Directly generating KiCad netlist from
> the schematic that is
> >> > compatible with ngspice.
> >> >
> >> > *
> >> >
> >> > The generated KiCad netlist is modified
> to be compatible
> >> with ngspice.
> >> >
> >> > A button can be provided in the KiCad
> interface to run the
> >> simulation.
> >> >
> >> >> - What type of UI would be offered to the
> user? Would e.g.
> >> plots be automatically re-calculated and
> displayed if a
> >> parameter is changed in the schematics? How
> would stimuli be
> >> entered? How would you probe signals and
> select them for plotting?
> >> >
> >> > The simulation opens up a python based UI.
> >> >
> >> > When the parameters are changed in the
> schematic, the
> >> simulation can be
> >> > done only after generating the modified
> netlist. So the
> >> simulations will
> >> > not change automatically.
> >> >
> >> > A dialog box based entry is provided to
> enter the parameters for
> >> > simulation,
> >> >
> >> > To probe the signals we can use global
> label and save the
> >> netlist with
> >> > name. After that by using python plot we
> can take the outputs by
> >> > selecting the name which is given as a
> global label.
> >> >
> >> >
> >> >> - Formats of any output files the user
> would get.
> >> >
> >> > *
> >> >
> >> > You have the options to print or just
> view the
> >> simulations. In
> >> > python plotting the user can save the
> simulation in png
> >> and jpg
> >> > formats.
> >> >
> >> >
> >> > As KiCad is looking at integrating QUCS for
> simulation, ngspice
> >> > simulation and python plotting can serve as
> added capability
> >> to KiCad.
> >> >
> >> >
> >> > We are open to your inputs and suggestions.
> >> >
> >> >
> >> > Regards,
> >> >
> >> >
> >> > Oscad Team,
> >> >
> >> > IIT Bombay.
> >> >
> >> >
> >> > *
> >> >
> >> >
> >> > On Thu, Jun 12, 2014 at 8:43 PM, Javier Serrano
> >> > <javier.serrano.pareja@xxxxxxxxx
> <mailto:javier.serrano.pareja@xxxxxxxxx>
> >> <mailto:javier.serrano.pareja@xxxxxxxxx
> <mailto:javier.serrano.pareja@xxxxxxxxx>>
> >> > <mailto:javier.serrano.pareja@xxxxxxxxx
> <mailto:javier.serrano.pareja@xxxxxxxxx>
> >> <mailto:javier.serrano.pareja@xxxxxxxxx
> <mailto:javier.serrano.pareja@xxxxxxxxx>>>> wrote:
> >> >
> >> > On Thu, Jun 12, 2014 at 9:26 AM, Javier Serrano
> >> > <javier.serrano.pareja@xxxxxxxxx
> <mailto:javier.serrano.pareja@xxxxxxxxx>
> >> <mailto:javier.serrano.pareja@xxxxxxxxx
> <mailto:javier.serrano.pareja@xxxxxxxxx>>
> >> > <mailto:javier.serrano.pareja@xxxxxxxxx
> <mailto:javier.serrano.pareja@xxxxxxxxx>
> >> <mailto:javier.serrano.pareja@xxxxxxxxx
> <mailto:javier.serrano.pareja@xxxxxxxxx>>>> wrote:
> >> > > Functional specifications can be discussed
> >> > > before even writing the technical specs, and would
> >> include things
> >> > > like:
> >> > >
> >> > > - What type of simulations should be possible? Spice,
> >> digital,
> >> > > S-parameter, IBIS for signal integrity, other?
> >> > > - How a user would set up and run a simulation.
> >> > > - What type of UI would be offered to the user? Would
> >> e.g. plots be
> >> > > automatically re-calculated and displayed if a
> >> parameter is changed in
> >> > > the schematics? How would stimuli be entered? How
> >> would you probe
> >> > > signals and select them for plotting?
> >> > > - Formats of any output files the user would get.
> >> >
> >> > One more idea: Python scripting support for interacting with
> >> > simulation would surely be very popular with KiCad users.
> >> >
> >> > Cheers,
> >> >
> >> > Javier
> >> >
> >> >
> >> >
> >> >
> >> > _______________________________________________
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> >>
> >>
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> >
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